Apparatus for frictioning or coating fabrics



Sept. 14 1926.

O. MACKLIN APPARATUS FOR FRICTIONING OR COATING FABRICS Filed August 2.1 1924 2 Sheets-Sheet 1 Sept. 14 1926. 1,600,119

0. MACKLIN APPARATUS FOR FRICTIONING OR COATING FABRICS Filed August 2, 1924 2 Sheets-Sheet 2 1 mil mum-Inn H'll Inuenfor: Ofla JZaclclin, 13% MAMMJHW Patented Sept. 14, 1926.

UNITED STATES PATENT OFFICE.

OTTO MACKLIN, OF

AKRON, OHIO, ASSIGNOR TO THE MILLER RUBBER COMPANY,

AKRON, OHIO, A CORPORATION OF OHIO.

APPARATUS FOR FRIOTIONING OR COATING FABRICS.

Application filed August 2, 1924. Serial No. 729,746.

The invention concerns apparatus for coating or frictioning fabric with rubber compound for use in the manufacture of tires friction fabric or a rubber employed.

One object an apparatus and for similar purposes where a coated fabric is of the invention is to provide by which the fabric will be coated or frictioned on both faces during one cycle through the machine.

The invention consists in the features and combination and arrangement of parts hereinafter described and particularly pointed out in the claims.

specification- Figure 1 is a vertical through one the invention. 20.

In the drawings forming. a part of this sectional view form of apparatus embodying Fig. 2 is a face view of part of the calender rolls with gearing shown in section.

Fig. 3 is a detail This apparatus frictioning two sides of the 5 same is passing continuously through the- The machine may also be emcalender.

plan view. is specially designed for fabric while the ployed to coat the two faces or sides of the fabric, it being understood that the only difference between coating is that in the coating operat of rubber is calendered to th1 upon the fabric, whereas 1n and frictioning ion a thin layer 'ckness and laid the frictioning operation, the rubber compound is wiped into the fabric so as to penetrate the meshes u and only slightly cover the surface thread.

In the ordinary practice of treating fabric as above mentioned, it is sides or faces. and in carrying out 40. passed. in ordinary practice,

through the calendering machine. use of the present invention operations may be done in one pass coated on this action the fabrlc is frictioned on two d the fabric f in one face, an

three times By the two of these through the calendering machine, one operation being thus eliminated, where narily employed.

In the drawing,

three are ordi- 1 indicates a suitable housing on which are mounted a lower roll gearsi 5,

a'bull gear 8 which derives its power from any suitable source. The present drawing includes two additional rolls, and in the particular embodiment which I have chosen to illustrate my invention, one of these rolls. 9, is located to one side of the center roll 3, and the other roll 10, is located upon the opposite side of said center roll. These ad ditional rolls, 9 and 10, are driven through suitable gears (not shown) from the same source of power which drives the center roll. The center roll is mounted in bearings 3 rigidly fixed in the frame or housing, whereas rolls 2, 4, 9 and 10 are mounted in bearings such as 2, 4 and 10, the bearing for roll 9 being similar, but not shown, which are designed to be adjustable towards and from the center roll in slots in the frame or housing.

The rubber compound is fed into the machine at points A and B, whichindicate the batches of the compound supplied. to the bites of the rolls 9 and 3, and 10 and 3 respectively. From the passages between these three rolls, issues in a thin film which clings to and 1s fed by the center roll 3 on the opposite sides thereof, and is carriedto opposite points above and below the center roll 3, where it contacts with the fabric as it passes between the rolls 3 and 4, and 3 and 2 respectively. This film of compound is indicated at a and b. The film 0 contacts with going through the pass between rolls 3 and 4, and is laid upon or frictioned into the under face of the fa ric as it comes from the supply roll 11 and goes through the pass between the rolls 3 and 4 The coated or friction fabric thence passes over a guide roll .13 and also'a guide roll 9, 3 and 10, the composition known practice, so that each ing roll, the treated fabric passes over a guide roll 16 and to a fabric turning means consisting of a roll 17 having its axis inclined at an angle of 45 to the direction of travel of the fabric after leaving roll 16, and after passing over this inclined roll 17, the fabric passes around a roll 18 which is set with its axis parallel with the direction of general movement of the fabric, and thence over an inclined roll 19 which is set at an angle of 45 and at right angles to the plane of inclination of the roll 17, and from here the fabric passes around a guide roll 20, thence to guide roll 21, and thence through the pass between the lower roll 2 and the center roll 3, where it receives the film of compound 6 from the roll 3, and thence the completed fabric, frictioned or coated as above described, is wound upon a storage roller 12, or directed to any other suitable point,

By the apparatus just described the fabric will be treated on both of its faces during one cycle of movement through the machine.

The invention is not limited to the precise arrangement of rolls shown, but this larrangement is shown to illustrate thegeneral features of the invention and the principle upon which it is based, and it is to be understood that-this specification and the accompanying illustration are not to be re garded as restrictive upon the scope of the invention, which is defined by the appended claims. 1

It will be understood that the rolls 9 and 10 may be geared at all times to roll 3 so as to give a uniform surface speed in respect to these three rolls, rolls 9 and 10 being used as feed rolls for the compound. The changing of the gearing which drives the rolls 2 and 4, in respect to the gearing which drives the roll 3 may be accomplished in any ordinary manner, such as providing even ratio gears on one end of the calender rolls and odd ratio gears at the opposite ends of these rolls. These gears may be fastened to the rolls by keys which may be pulled out alternately when desired, so as to throw into use whichever set of g'ears'the operator desires the machine to work with. It will also be understood that while the calender rolls are shown of uniform diameter, in practice some of them may be smaller than others where it is found desirable in order tonprovide more working space between the ro s.

The movable bearings for the rolls are adjusted by suitable screws, as indicated. These may be independently adjustable or they may be connected together, as in well pair of bearings may be adjusted by one movement of a hand wheel. ,Any suitable form of let-off attachment may be employed at the supply roll 11, and this may be of the well known construction involving a pair of chucks mounted in bearings of the housing, and a brake band for providing the necessary tension. Wind-up roll 12 may be of the usual construction involving a pair of chucks, one of which is power driven from the calender rolls by suitable gearing, not shown.

When using the machine for frictioning,

the driving gearing is so designed that rolls,

2, 4, 9 and 10 have a surface speed faster than the surface speed of roll 3, for instance about 1 to 1 ratio, whereas when the machine is used for coating, all the gears are so designed that the surface speed thereof is equal.

I claim 1. In combination, a group of three juxtaposed calender rolls one of which is intermediate the other two, providing two passes for fabric, means whereby the intermediate roll is caused to apply. compound to the fabric on both. passes, means for directing a strip of fabric through one pass, and means for returning an advanced portion of said fabric strip to the other pass with its uncoated surface in contact with said inter mediate rollf 2. In combination, a group of three calender rolls, one of which is intermediate the other two, providing two passes for fabric, rolls cooperating with the intermediate roll for supplying two distinct batches of compound thereto on opposite sides thereof, means for feeding a fabric strip through one of the passes, and means for returning an advanced portion of said fabric strip to the second pass with its uncoated surface in position to contact with said intermediate roll.

3. In combination, a group of there calender rolls comprising an intermediate compound applying roll and two cooperating rolls providing with said intermediate roll two passes, and means for directing the fabric through one pass and returning it to the other pass, including means for turning the fabric after leaving the first pass and before entering the second pass whereby the fabric will receive the compound on both faces during one cycle of movement through the passes.

4. In combination, a group of three calender rolls, one of which is intermediate the other two, providing two passes, means for directing fabric through one pass, and returning it through the other pass, and rolls cooperating with the intermediate roll for supplying-compound to the passes, and means for turning the fabric after leaving the first pass and before entering the second pass whereby the fabric will receive the compound on both faces during one cycle of movement through the passes.

5. In combination in apparatus of the class described, upper, lower and intermediate calender rolls forming two passes, a for its return through the lower pass to reroll at each side of the intermediate roll ceive the compound on its other side which cooperating therewith to feed compound to is now presented uppermost substantially as 10 a. continuous fabric directed first through described.

5 one pass and then the other, means for In testimony whereof, I aflix my signaturning the fabric, after receiving the com ture. v I pound at its lower side at the upper pass, OTTO MACKLIN. 

